How can we help?

Send us a photo of your grow and a note about what you are seeing. A mycologist on our team will reply within one business day with a specific answer — not a link to another article.

Frequently asked questions

Do I need a grow room or special equipment?

No. A closet, cabinet, or garden bed is enough. If you can hold 80–95% humidity around a bag, you can grow these mushrooms.

What if my block does not grow?

Send us a photo within 90 days of delivery and we ship a replacement. Free, no return required, no questions asked.

How long does it take?

Pink Oyster typically fruits in 18–24 days outdoors. Lion's Mane takes 25–30 days indoors. Chaga is instant.

Is my substrate safe to compost?

Yes. Spent blocks can go straight into a compost pile once the flushes are finished.

Grow support

Email support@growwithmushroom.com with a photo and your order number.

Replacements

Our 90-day grow guarantee means a failed block is replaced free of charge. Reach out through the same email address and include your order number — we do not need the original block back.